Hazardous Chemical Information System (HCIS)

Exposure Standard Documentation

Boron tribromide

SUBSTANCE NAME: Boron tribromide

CAS Number: 10294-33-4

Exposure Standard:

TWA: 1 ppm 10 mg/m 3

STEL: - ppm - mg/m 3

Peak limitation notice: For some rapidly acting substances and irritants, the averaging of airborne concentration over an eight hour period is inappropriate. These substances may induce acute effects after relatively brief exposure to high concentrations and so the exposure standard for these substances represents a maximum or peak concentration to which workers may be exposed. See Chapter 6: Guidance Note on the Interpretation of Exposure Standards for Atmospheric Contaminants in the Occupational Environment, published by Worksafe Australia.

Documentation notice. American Conference of Governmental Industrial Hygienists (ACGIH), Documentation of Threshold Limit Values and Biological Exposure Indices, 6th Edition, ACGIH, Cincinatti, Ohio, 1991

No standard should be applied without reference to Guidance on the interpretation of Workplace exposure standards for airborne contaminants.

Peak limitation notice:

Peak - means a maximum or peak airborne concentration of a particular substance determined over the shortest analytically practicable period of time which does not exceed 15 minutes.

Documentation notice

Documentation for the majority of substances can be found in the American Conference of Governmental Indistrial Hygienists' (ACGIH) documentation of the threshold limit values and biological exposure indices - users should refer to the ACGIH documentation cited.